The imposing fašade made out of travertine, has a balcony in its middle and two orders of Corinthian parastades from Tuscania with niches and statues by Pierre l'Estache. This church has three aisles divided by Ionic pillars. It is famous because it keeps tombs of many French personages and important masterpieces. The frescoes in the second right chapel representing scenes of Saint Cecily's life, are among the best works by Domenichino. Another remarkable work of art you can admire is the "Assunzione" by Francesco Bassano. However the most famous works are kept in the aisle of Saint Matthew, where you can find, on the right wall, the "Martirio di San Matteo", on the left wall, the "Vocazione di San Matteo", and on the altar, "San Matteo e l'Angelo", which are masterpieces by Caravaggio.